Articles | Volume 12, issue 17
https://doi.org/10.5194/acp-12-8095-2012
© Author(s) 2012. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/acp-12-8095-2012
© Author(s) 2012. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article
| 
10 Sep 2012
Research article |
| 10 Sep 2012
Carbon and hydrogen isotopic ratios of atmospheric methane in the upper troposphere over the Western Pacific
T. Umezawa
Center for Atmospheric and Oceanic Studies, Graduate School of Science, Tohoku University, Sendai, Japan
now at: Max Planck Institute for Chemistry, Mainz, Germany
T. Machida
National Institute for Environmental Studies, Tsukuba, Japan
K. Ishijima
Research Institute for Global Change, JAMSTEC, Yokohama, Japan
H. Matsueda
Meteorological Research Institute, Tsukuba, Japan
Y. Sawa
Meteorological Research Institute, Tsukuba, Japan
P. K. Patra
Research Institute for Global Change, JAMSTEC, Yokohama, Japan
S. Aoki
Center for Atmospheric and Oceanic Studies, Graduate School of Science, Tohoku University, Sendai, Japan
T. Nakazawa
Center for Atmospheric and Oceanic Studies, Graduate School of Science, Tohoku University, Sendai, Japan
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Cited
28 citations as recorded by crossref.
- N2O as a tracer of mixing stratospheric and tropospheric air based on CARIBIC data with applications for CO2 S. Assonov et al. https://doi.org/10.1016/j.atmosenv.2013.07.035
- Stratospheric δ13CO2 observed over Japan and its governing processes S. Sugawara et al. https://doi.org/10.5194/acp-25-11895-2025
- Using δ13C-CH4 and δD-CH4 to constrain Arctic methane emissions N. Warwick et al. https://doi.org/10.5194/acp-16-14891-2016
- Identification of natural gas leak sources using ethane/methane ratios and methane isotopic signatures Y. Zhang et al. https://doi.org/10.1016/j.aeaoa.2026.100434
- Spatio-temporal variations of the atmospheric greenhouse gases and their sources and sinks in the Arctic region S. Morimoto et al. https://doi.org/10.1016/j.polar.2020.100553
- Seasonal changes of CO2, CH4, N2O, and SF6 in the upper troposphere/lower stratosphere over the Eurasian continent observed by commercial airliner Y. Sawa et al. https://doi.org/10.1002/2014GL062734
- In situ observations of the isotopic composition of methane at the Cabauw tall tower site T. Röckmann et al. https://doi.org/10.5194/acp-16-10469-2016
- Seasonal Variations of CO<sub>2</sub>, CH<sub>4</sub>, N<sub>2</sub>O and CO in the Mid-Troposphere over the Western North Pacific Observed Using a C-130H Cargo Aircraft Y. NIWA et al. https://doi.org/10.2151/jmsj.2014-104
- Seasonal Variations of SF6, CO2, CH4, and N2O in the UT/LS Region due to Emissions, Transport, and Chemistry J. Bisht et al. https://doi.org/10.1029/2020JD033541
- Methane chemistry in a nutshell – the new submodels CH4 (v1.0) and TRSYNC (v1.0) in MESSy (v2.54.0) F. Winterstein & P. Jöckel https://doi.org/10.5194/gmd-14-661-2021
- Estimating emissions of methane consistent with atmospheric measurements of methane and δ13C of methane S. Basu et al. https://doi.org/10.5194/acp-22-15351-2022
- Variations of tropospheric methane over Japan during 1988–2010 T. Umezawa et al. https://doi.org/10.3402/tellusb.v66.23837
- What controls the seasonal cycle of columnar methane observed by GOSAT over different regions in India? N. Chandra et al. https://doi.org/10.5194/acp-17-12633-2017
- Global stratospheric measurements of the isotopologues of methane from the Atmospheric Chemistry Experiment Fourier transform spectrometer E. Buzan et al. https://doi.org/10.5194/amt-9-1095-2016
- Ship- and aircraft-based XCH4 over oceans as a new tool for satellite validation A. Müller et al. https://doi.org/10.5194/amt-17-1297-2024
- Scale and stability of methane standard gas in JMA and comparison with MRI standard gas K. TSUBOI et al. https://doi.org/10.2467/mripapers.66.15
- Fully automated, high‐throughput instrumentation for measuring the δ13C value of methane and application of the instrumentation to rice paddy samples T. Tokida et al. https://doi.org/10.1002/rcm.7016
- The Methane Isotopologues by Solar Occultation (MISO) Nanosatellite Mission: Spectral Channel Optimization and Early Performance Analysis D. Weidmann et al. https://doi.org/10.3390/rs9101073
- Hydrogen isotope systematics among H2–H2O–CH4 during the growth of the hydrogenotrophic methanogen Methanothermobacter thermautotrophicus strain ΔH S. Kawagucci et al. https://doi.org/10.1016/j.gca.2014.07.020
- Multi-observational estimation of regional and sectoral emission contributions to the persistent high growth rate of atmospheric CH4 for 2020–2022 Y. Niwa et al. https://doi.org/10.5194/acp-25-6757-2025
- Advancing Scientific Understanding of the Global Methane Budget in Support of the Paris Agreement A. Ganesan et al. https://doi.org/10.1029/2018GB006065
- Simulation of the isotopic composition of stratospheric water vapour – Part 1: Description and evaluation of the EMAC model R. Eichinger et al. https://doi.org/10.5194/acp-15-5537-2015
- Long-term and interannual variations of atmospheric methane observed by the NIES and collaborative observation networks T. Umezawa et al. https://doi.org/10.1186/s40645-025-00711-9
- Seasonal evaluation of tropospheric CO2 over the Asia-Pacific region observed by the CONTRAIL commercial airliner measurements T. Umezawa et al. https://doi.org/10.5194/acp-18-14851-2018
- Global and Regional CH4 Emissions for 1995–2013 Derived From Atmospheric CH4, δ13C‐CH4, and δD‐CH4 Observations and a Chemical Transport Model R. Fujita et al. https://doi.org/10.1029/2020JD032903
- Interlaboratory comparison of δ13C and δD measurements of atmospheric CH4 for combined use of data sets from different laboratories T. Umezawa et al. https://doi.org/10.5194/amt-11-1207-2018
- Expanding Continuous Carbon Isotope Measurements of CO2 and CH4 in the Italian ICOS Atmospheric Consortium: First Results from the Continental POT Station in Potenza (Basilicata) A. Buono et al. https://doi.org/10.3390/atmos16080951
- Evaluation of a new methane calibration system at JMA for WCC Round Robin experiments H. Matsueda et al. https://doi.org/10.2467/mripapers.67.57
28 citations as recorded by crossref.
- N2O as a tracer of mixing stratospheric and tropospheric air based on CARIBIC data with applications for CO2 S. Assonov et al. https://doi.org/10.1016/j.atmosenv.2013.07.035
- Stratospheric δ13CO2 observed over Japan and its governing processes S. Sugawara et al. https://doi.org/10.5194/acp-25-11895-2025
- Using δ13C-CH4 and δD-CH4 to constrain Arctic methane emissions N. Warwick et al. https://doi.org/10.5194/acp-16-14891-2016
- Identification of natural gas leak sources using ethane/methane ratios and methane isotopic signatures Y. Zhang et al. https://doi.org/10.1016/j.aeaoa.2026.100434
- Spatio-temporal variations of the atmospheric greenhouse gases and their sources and sinks in the Arctic region S. Morimoto et al. https://doi.org/10.1016/j.polar.2020.100553
- Seasonal changes of CO2, CH4, N2O, and SF6 in the upper troposphere/lower stratosphere over the Eurasian continent observed by commercial airliner Y. Sawa et al. https://doi.org/10.1002/2014GL062734
- In situ observations of the isotopic composition of methane at the Cabauw tall tower site T. Röckmann et al. https://doi.org/10.5194/acp-16-10469-2016
- Seasonal Variations of CO<sub>2</sub>, CH<sub>4</sub>, N<sub>2</sub>O and CO in the Mid-Troposphere over the Western North Pacific Observed Using a C-130H Cargo Aircraft Y. NIWA et al. https://doi.org/10.2151/jmsj.2014-104
- Seasonal Variations of SF6, CO2, CH4, and N2O in the UT/LS Region due to Emissions, Transport, and Chemistry J. Bisht et al. https://doi.org/10.1029/2020JD033541
- Methane chemistry in a nutshell – the new submodels CH4 (v1.0) and TRSYNC (v1.0) in MESSy (v2.54.0) F. Winterstein & P. Jöckel https://doi.org/10.5194/gmd-14-661-2021
- Estimating emissions of methane consistent with atmospheric measurements of methane and δ13C of methane S. Basu et al. https://doi.org/10.5194/acp-22-15351-2022
- Variations of tropospheric methane over Japan during 1988–2010 T. Umezawa et al. https://doi.org/10.3402/tellusb.v66.23837
- What controls the seasonal cycle of columnar methane observed by GOSAT over different regions in India? N. Chandra et al. https://doi.org/10.5194/acp-17-12633-2017
- Global stratospheric measurements of the isotopologues of methane from the Atmospheric Chemistry Experiment Fourier transform spectrometer E. Buzan et al. https://doi.org/10.5194/amt-9-1095-2016
- Ship- and aircraft-based XCH4 over oceans as a new tool for satellite validation A. Müller et al. https://doi.org/10.5194/amt-17-1297-2024
- Scale and stability of methane standard gas in JMA and comparison with MRI standard gas K. TSUBOI et al. https://doi.org/10.2467/mripapers.66.15
- Fully automated, high‐throughput instrumentation for measuring the δ13C value of methane and application of the instrumentation to rice paddy samples T. Tokida et al. https://doi.org/10.1002/rcm.7016
- The Methane Isotopologues by Solar Occultation (MISO) Nanosatellite Mission: Spectral Channel Optimization and Early Performance Analysis D. Weidmann et al. https://doi.org/10.3390/rs9101073
- Hydrogen isotope systematics among H2–H2O–CH4 during the growth of the hydrogenotrophic methanogen Methanothermobacter thermautotrophicus strain ΔH S. Kawagucci et al. https://doi.org/10.1016/j.gca.2014.07.020
- Multi-observational estimation of regional and sectoral emission contributions to the persistent high growth rate of atmospheric CH4 for 2020–2022 Y. Niwa et al. https://doi.org/10.5194/acp-25-6757-2025
- Advancing Scientific Understanding of the Global Methane Budget in Support of the Paris Agreement A. Ganesan et al. https://doi.org/10.1029/2018GB006065
- Simulation of the isotopic composition of stratospheric water vapour – Part 1: Description and evaluation of the EMAC model R. Eichinger et al. https://doi.org/10.5194/acp-15-5537-2015
- Long-term and interannual variations of atmospheric methane observed by the NIES and collaborative observation networks T. Umezawa et al. https://doi.org/10.1186/s40645-025-00711-9
- Seasonal evaluation of tropospheric CO2 over the Asia-Pacific region observed by the CONTRAIL commercial airliner measurements T. Umezawa et al. https://doi.org/10.5194/acp-18-14851-2018
- Global and Regional CH4 Emissions for 1995–2013 Derived From Atmospheric CH4, δ13C‐CH4, and δD‐CH4 Observations and a Chemical Transport Model R. Fujita et al. https://doi.org/10.1029/2020JD032903
- Interlaboratory comparison of δ13C and δD measurements of atmospheric CH4 for combined use of data sets from different laboratories T. Umezawa et al. https://doi.org/10.5194/amt-11-1207-2018
- Expanding Continuous Carbon Isotope Measurements of CO2 and CH4 in the Italian ICOS Atmospheric Consortium: First Results from the Continental POT Station in Potenza (Basilicata) A. Buono et al. https://doi.org/10.3390/atmos16080951
- Evaluation of a new methane calibration system at JMA for WCC Round Robin experiments H. Matsueda et al. https://doi.org/10.2467/mripapers.67.57
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